Turn-over gear for use with rolling mills and the like



Sept. 5, 1961 T. A. G. sHlMELD 2,998,888

TURN-OVER GEAR USE WITH ROLLING MILLS AND THE LIKE Filed Nov. 22, 1957 4Sheets-Sheet 1 1 15G 23 IE 15b 1 INVENTOR Sept 5, 1961 T. A. G. sHlMELD2,998,888

TURN-OVER GEAR USE WITH ROLLING MILLS AND THEv LIKE Filed Nov. 22, 19574 Sheets-Sheet 2 Fl G. 2

24 18\ i Y' 29 i 30- f 2 "5l/1 sa 11 25 I? r if 26 Y 15a 15 i; 19 "\7 lSi i l 21 il l Scl- l i f 4 14 'I 5 CJ k/9 1o l I INVENTOR ATTORNEYSsept. 5, 1961 TURN-OVER GEAR USE WITH ROLLING MILLS AND THE LIKE FiledNov. 22, 195'? T. A. G. SHIMELD 4 Sheets-Sheet 3 FIG.3.

25 LJL 12 26 18 N,/-9 /1O I lNvENToR ATTORNEYS Sept. 5, 1961 T. A.' G.sHlMELD 2,998,888

TURN-OVER GEAR USE WITH ROLLING MILLS AND THE LIKE 4 Sheets-Sheet 4Filed NOV. 22, 1957 United States Patent O j l 2,998,888 TURN-OVER GEARFOR USE WITH RGLLING MILLS AND THE LIKE Tom Alexander George Shimeld,Shemeld, England, assigner to Davy and Uniteddlngineering CompanyLimitedr y Filed Nov. 22,' *1957, Ser. No. `698,248 Claims priority,application Great Britain Nov. 23, 1956 3Claims. (Cl. 214-1) Thisinvention relates to turn-up or turn-over gear for usein conjunctionwithva rolling mill or the like.

It is common practice in rolling mills to deliver a rolled billet, baror structural'section on to a series of driven conveyor rollers whichktake it to. a sawing, shearing or like dividing appliance and thenceftoa further seriesrof rollers from whichthe severed pieces aretransferred, one by oneto a series of skid rails lying in a directionperpendicular to the vrun of the conveyor, the rails forming a bank uponwhich the pieces are allowed to cool. The pieces are usually transferredby a series of skid monkeys moving in tracks between the rails and eachprovided with a pivoted iinger so that the skid monkey is capable ofmoving the pieces alongv the skid rolls. in one direction, but thelingerisdepressed below the rails' as lthe monkey returns under further`sections on the rai s.

When coolingr structural shaped'. such4 as I-beams, particularlyybroad-hanged beams, which are rolled and divided with theirilangesvertical, vit is desirable to turn the beam through an angle of90" in order to avoid damagetothe edges of the flanges.l

Various` forms of turn-over gear for rolled sections are well known inthe art, but they suiier frornone or moreofi the followingdisadvantages.

(a) They are very cumbersome and/or costly.

(b) The turning meansmay comprise serrated iingers whichdamage thesurface of the section,

(c)- The gear cannot be retracted until the section has been withdrawnlongitudinally,

(d) The gear is'unreliable4 in operation,

(e) Thev gear has no provision to prevent the section turning through180, andV (f) No knowngear is capable of operating atrthe speed'provided for in this invention.

The object of the invention is to provide a simple and reliableturn-over gear which can turn sections of relatively'largev size, e.g'.36" x 161/2".

According to the invention, turn-up or turn-over gear for use with arolling mill or the like and arranged to be locatedY between skid railswhich receive the sections to be turned, comprisesa turning memberhaving. at least two limbs set at' an angle, means to raise and lowerthe member', and guide means for the member so arranged that as themember is raised, a section on the rails and in a position to be turnedis caught at the junction of said limbs, lifted clear of the rails andturned through substantially 90 of arc and as the member is lowered thesection is deposited on the skid rails in its turned position. Y

The means for raising or lowering the member may stantially parallel.withtheskid rails, then. loweredland then returned toits inoperativeposition.

Considered from vanother aspect the turning memben *n maybe consideredto have two points which are constrained vto follow predetermined pathsduring aturning,

operation, the sequence being such that, starting from an inoperativeposition, the iirst pointisraised while the member pivots about thesecond'point which is held sta-` tionary, thenthesecond point israised'and simultaneously; the rst point is moved. towards the positionoriginally occupied by thesecond point, then both points are loweredjand finally` both points are returned to their inoperaa tive positions.vY

include a rotatable arm and a connecting rodV pivotally yconnectedfb'etwe'en the member and the arm. The guide The path followedby the second point is conveniently; the arc of a circleand thev chordof the arc is approximately vertical. The iinal part of the pathfollowed by the rst point lies under that part of the path which` thefirst pointfollows in. moving towards the original position occupied bythesecond point.

In order that the invention may beclearly understood andreadilycarriedinto etect, one construction in accordancef therewith will now bedescribed, by way of example, with referenceto, the accompanyingdrawings,l in which:

FIGURE lis anend elevation of a turn-upA gear;Y

FIGURE 2.is.v a sectionronthe line IVI-II' in FIG,- URE 1;

FIGURE: 3. shows,` a section similar to FIGURE,` 2" withcertainofthefparts in different operative positions;

FIGURE 4 is. a section similar to FIGURE 2, but showing'certain ofthe,parts in yet other operativeV porsi-r tions; and j FIGURE 5. isacross-section on one line V-V inv FIGURE 2 through-.a detail of thegear of FIGURES* 1 to 4; shownfon ari-enlarged scale.

'I'he turn-up gear is located in a pit between adjacentpairs of skidrails 1,.towhich arel delivered rolled I-sec.-

tions 2v to' be turned up from positions in which they Y of the pit andrunning. transversely to, the directions/of the skid rails 1 is-a mainshaft 3 which canA be turned toeand-fro. about its Xed axis by areversible motor (not shown). Rotatable on the shaft 3 is an armv 4'.The outer end of the arml 4 is, pivoted by means of a gudgeon pin 5between two plates 6 forming parts of a vertical bar 7 j including, a.vertical plate 8 to which two vertical channel.sections-9aicarryingtheiplates 6 are fixed'. 'Ihe bottom ofthe barv7fis shownin FIGURES l to3 toy be resting on a metal pad 10. at-` the bottom of thepit, with anintervening,v plate.. 9 inserted precisely to define, the lower/limit ofthe stroke` ofl the bar. 7. The top ofthe bar 7 carriesa pair. of`plates 11 supporting a gudgeon pin 12 to.whichfone end of a turningmember 13v isv pivoted. Y,

Keyed to the main shaft 3 on each side of the arm 4;, rotatable thereon,is a pair of bifurcated arrns14. These arms 14 are. of. the same lengthand are, pivotallyv connected: to thev lower end' of anupwardiyextending conv necting rod 15 comprising two ,upwardly extendingA parts15a, 15bjoined by webs 16, 1 7. The two partsr 15a,"1`v5'5 are bent sothat their lower ends, pivoted to the` arms 14, are wider apart thantheir upper ends whichY lie one on each side ofthe turning member 13 towhich they are pivoted. by a gudgeon pin `18 passing through the turningmember 13 and through both parts 15a, 15b' of the rod 15. Situated somedistance vertically above the main shaft and parallel thereto is a.second shaft 19 f Rtented Sept. 5, 196,1.V

a, 15b of the upwardly extending rod 15. The arrangement is such thatwhen, as shown in FIGURES l and 2, the vertical bar 7 is in itslowermost position, the arms 4, are inclined downwardly from the shafts3, 19; thus, when the bar 7 is raised it remains-vertical although itsperpendicular distance from the axis of the shafts 3, 19 varies as thebar is moved.

' The turning member 13 is L-shaped, being formed with a longer limb 23,to which the bar 7 and rod 15 are pivoted, and a shorter limb 24. At thejunction between these two limbs the turning member carries a transversehorizontal shaft carrying rollers 26 at its opposite ends. When the gearis into its lowermost and inoperative position the free end of thelonger limb 23 is substantially level with the top of the skid rails 1and the longer is inclined downwardly (FIGURE 2) from its free end sothat its shortertlimb 24 is completely below the level ofthe skidrails 1. j

The operation of the gear is as follows; assuming that section 2 hasarrived in position above the gear, which is in its inoperative positionof FIGURES l and 2, the electric motor is operated to turn the mainshaft3 and raise the connecting rod 15. As the connecting rod 15 is raisedtowards the position of FIGURE 3, the lifting member 13 pivots about itsconnection `12 with the vertical bar 7 until the shorter limb 24 of theL is above the level of the skid rails 1. TheA rollers 26 then engage apair of parallel horizontal guide rails 27 and thereby prevent thejunction of the limbs of the L nom rising any higher. In this firststage the liftingmember 13 pivots about its connection 12 with thevertical bar 7 since the bar 7 is sufficiently heavy to keep the freeend of the longer limb 23 of the L in its original position. Anytendency for the rollers 26 to move to the right is prevented byparallel guide surfaces 30.

Upon further rotation of the main shaft 3, since the rollers 26 on thelifting member 13 have coacted with the guide rails 27 and are preventedfrom rising further, the member 13 begins to pivot about the axis of therollers 26. As it pivots the free end of the longer limb 23 of the L islifted and lifts the vertical bar 7. As the vertical bar 7 is lifted therollers 26 on the lifting member 13 move along the guide rails 27towards the bar 7 and along a path parallel to the skid rails to theposition of FIGURE 4. The vertical bar 7 is lifted until it can belifted no further due to the guide rails 27 coacting with the rollers26. When this state is reached the shorter limb 24 of the L is above andat a slight angle to the skid rails 1 and the longerV limb 23 of the Lis at a slight angle to the vertical. t

During these iirst two stages of movement, the section 2 has been caughtat the junction of the limbs of the turning member, lifted clear of theskid rails 1 and turned through substantially 90 of arc.

The electric motor driving the main'shaft 3 is now reversed and thelifting member 13 is lowered. During the first stage of lowering theangular position of the lifting member 13 remains substantiallyunchanged and the rollers 26 descend past parallel guide surfaces 28.The shorter limb 24 of the L is lowered below the level of the skidrails 1 and the section is deposited on the skid rails 1 in its turnedposition. As the bar 15 is lowered still further the rollers 26 engageparallel guide rails 29 along which they run as the member 13 returns toits irst inoperative position below the level of the skid rails 1. i Itwill be seen that since the lifting member in its inoperative positionis below the level of the skid rails 1 the normal movement of thesections by skid monkeys will not be hindered. Thus a plurality ofturn-up gears according to the invention may be situated in line acrossa bank of skid rails and driven in simultaneously to turn over a longlength of a section. Conventional skid monkeys may he situated betweeneach pair of turn-up gears.

By repeating the turn-up operation without using the monkeys to feed thesection beyond the turn-up gear, the section, assuming the shapes of thesection and the turning member to be properly related, is, of course,turned over by 180 of arc. Monkeys may, however, be used to position thesection prior to the second operation.

I claim:

l. Turn-up gear arranged to be located between skid rails which receiverolled sections to be turned comprising, in combination, a turningmember having first and second limbs set at an angle to one another,means having a pivotal connection with said member for raising andlowering at least part of said member past the skid rails from aninitial position in which said member lies wholly beneath said skidrails to a position in which the second of said limbs projects above theskid rails, a pivot at the free end of said first limb about which saidmember swings upwards to cause the second limb to project above the skidrails, means operable after the operations of said raising means forcausing said pivot to rise in a substantially vertical direction, andguiding the junction between said limbs to move substantiallyhorizontally towards the vertical plane containing said pivot while saidpivot is moving upwards, the section being located in the angle betweensaid limbs by said upward swinging of said member and turned throughsubstantially of arc by said raisingof said pivot and substantiallyhorizontal movement of said junction, said pivot raising means includinga bar carrying said pivot, and a pair of parallel arms freely pivotedrespectively about two fixed axes, said bar being pivoted to said arms.

2. Turn-up gear arranged to be located between skid rails which receiverolled sections to be turned comprising, in combination, a turningmember having first and second limbs set at an angle to one another,means having a pivotal connection with said member for raising andlowering at least part of said member past the skit rails from aninitial position in which said member lies wholly beneath said skidrails to a position in which the second of said limbs projects above theskid rails, a pivot at the free end of said first limb about which saidmember swings upwards to cause the second limb to project above the skidrails, means operable after the operations of said raising means forcausing said pivot to rise in a substantially vertical direction, meansguiding the junction between said limbs to move substantiallyhorizontally towards the vertical plane containing said pivot while saidpivot is moving upwards, the section being located in the angle betweensaid limbs by said upward swinging of said member and turned throughsubstantially 90 of arc by said raising of said pivot and substantiallyhorizontal movement of said junction, and a roller mounted on saidmember, said means guiding the junction between said limbs to movesubstantially horizontally comprising a track beneath which said rollerruns, and means to exert a load on said member on the side of saidpivotal connection remote from said roller, said load exerting a turningmoment about said pivotal connection maintaining said roller in contactwith said track.

3. Turn-up gear arranged to be located between skid rails which receiverolled sections to be turned comprising, in combination, a turningmember having first and second limbs set at an angle `to one another,means having a pivotal connection with said member for raising andlowering at least part of said member past the skid rails from aninitial position in which said member lies wholly beneath said skidrails to a position in which the second of said limbs projects above theskid rails, a. pivot at the free end of said first limb about which saidmember swings upwards to cause the second limb to project above the skidrails, means operable after the operations of said raising means forcausing said pivot to rise in a substantially vertical direction, meansguiding the junction between said limbs to move substantiallyhorizontally towards the vertical plane containing said pivot in theangle between said limbs by said upward swinging of said member andturned through substantially 90 of arc by said raising of said pivot andsubstantially horizontal movement of said junction, and a roller mountedon said turning member, said means guiding the junction between saidlimbs to move substantially horizontally comprising a first trackmounted substantially horizontally beneath which said roller is adaptedto run, a second track beneath said first track beneath which saidroller is adapted to run, and spaced guide surfaces respectively adaptedto direct said roller downwards from said rst track to said secondtrack, and upwards from said second track to said rst track, saidraising and lowering means being operative to swing said turning memberupwards about said pivot until said roller engages said rst track, thento swing said turning member upwards about said roller axis while saidroller runs along said first track, then to lower said turning memberuntil said roller engages said second track, and finally to permit saidroller to run along said second track towards said initial position.

References Cited in the le of this patent UNITED STATES PATENTS 959,813Stevens May 31, 1910 1,045,072 Parker Nov. 19, 19'12 1,432,007 WyattOct. 17, 1922 1,888,868 Schroder Nov. 22, 1932 2,345,620 Mork Apr. 4,1944 2,646,902 Nussberger July 29, 1953 FOREIGN PATENTS 3,224 GreatBritain Feb. 14, 1894 414,791 Germany June 27, 1925

